SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors
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  • Load image into Gallery viewer, SP Concepts Big Bore 4.5 inch exhaust system for Harley-Davidson big inch motors

SP CONCEPTS EXHAUST BIG BORE 4.5”

Regular price
$1,199.00
Sale price
$1,199.00
Regular price
Sold out
Unit price
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  • 4.5” HIGH FLOW PERFORMANCE ROLLED CONE MUFFLER WITH STEPPED BAFFLE FROM 2 ¼ TO 2 ½ INCHES. INCREASES BOTTOM TO MID RANGE TORQUE AND HORSEPOWER ON ALL MOTORS. TUNED PROPERLY CAN ACCOMMODATE 88" TO 143".
  • 065 STAINLESS STEEL HEADERS, STEPPED FROM 1 ¾” TO 1 7/8” TO 2” AT THE COLLECTOR
  • HAND TIG WELDED FROM TOP TO BOTTOM
  • MACHINED STAINLESS STEEL HEADER COLLARS
  • 18MM O2 BUNGS WITH 12MM ADAPTERS, ALLOWS FOR STOCK OR AUTOTUNE SENSORS
  • COMPLETE HARDWARE KIT WITH EVERYTHING YOU NEED TO MOUNT IT UP
  • ALLOW UP TO 3 WEEKS DELIVERY FOR MOST SYSTEMS